ixgbe: flush when in xmit_more mode and under descriptor pressure

Browse source

When xmit_more mode is being used and the ring is about to
become full or the stack has stopped the ring, enforce a tail
pointer write to the hw. Otherwise, we could risk a TX hang.

Code suggested by Alexander Duyck.

Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

...

This commit is contained in:

Daniel Borkmann 2014-08-26 19:34:18 +02:00 • committed by David S. Miller

parent 900405d014

commit 2367a17390

1 changed files with 34 additions and 29 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

63

drivers/net/ethernet/intel/ixgbe/ixgbe_main.c

View file